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Customer Care
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On January 31, 2020, Tennessee Wastewater Systems, Inc., filed a Joint Petition with Staff of the Tennessee Public Utility Commission to increase rates for wastewater services. Service rates were last increased on July 8, 2009. Click the link below for more detail.
Full Notice
TWSI has updated statewide and Williamson County bonding rates effective September 1st (October 1st billing cycle) to reflect the latest TRA mandated true-up. These rates are expected to remain in effect until the next true-up period, which is currently is set to be every 12 months.
All Adenus Utility Customers are now able to manage their accounts online! This includes checking your balance, viewing payment history, and making online payments. It's all part of our newly enhanced customer care section of the site. Give it a try by clicking the link below.
• Try it out
A piece on Adenus (our parent company) was recently aired on select TV stations across the southeast. If you missed it, you can watch it by clicking the link below.
• Watch the spot

Customer Portal
• Check your balance, account history, or make a payment any time

New Customer Signup
• Sign up for service

TWSI Terms of Service
• Everything you need to know about what to expect as a customer

ACH Direct Deposit Online Form
• The easiest way to pay your bill

Frequently Asked Questions: Customers
• The most common questions our customers ask

Frequently Asked Questions: General
• General questions about Tennessee Wastewater

Do's and Dont's for Effluent Collection
• Adenusฎ Homeowner's Manual

General Information
• Regulatory, Contact, and Maintenance info
Copyright © 2020 Adenus Group. All rights reserved.
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851 Aviation Parkway
Smyrna, TN 37167

Utility Customer Care: 888.3.ADENUS
Maintenance Hotline: 877.669.0786